Hydrogenation reactor heat energy recovery device

Abstract

The utility model provides a hydrogenation reactor heat energy recovery device, and relates to the technical field of hydrogenation reactors, the hydrogenation reactor heat energy recovery device comprises a hydrogenation reactor assembly, a heat absorption assembly and a heat utilization assembly, heat conduction oil is stored in an oil storage tank, the heat conduction oil is input into a heat absorption pipe by using a lead-in oil pump, and at the moment, a hydrocracking process is performed in a reactor body; at the moment, a large amount of heat energy is generated in the reactor body, the heat energy is transferred to heat conduction oil in a heat absorption pipe through a heat exchange jacket, a leading-out oil pump is started to sequentially transfer the heat conduction oil carrying the heat energy into a leading-out pipe and a heat exchange pipe from the heat absorption pipe, and at the moment, heat generated by reaction can be utilized, and when the temperature of the heat conduction oil becomes low, a circulating oil pump is started; and the heat conduction oil with the reduced temperature is transported into the oil storage tank again, so that one-time circulation is completed, and the heat conduction oil can be recycled for a long time in the production and manufacturing process, so that the heat energy of the reaction can be continuously utilized.

Description

Technical Field

[0001] The present application relates to the technical field of hydrogenation reactors, and in particular to a heat energy recovery device for a hydrogenation reactor. Background Art

[0002] Hydrocracking is a process in the petrochemical industry, that is, during the petroleum refining process, hydrogen is used as a catalyst to hydrogenate, crack and isomerize heavy oil at a relatively high pressure and temperature, and convert it into light oil (gasoline, kerosene, diesel or raw materials for catalytic cracking and cracking to produce olefins).

[0003] However, hydrogen will generate a large amount of heat energy after use. At present, the main means is to introduce process water into the jacket of the hydrogenation reactor. The process water is vaporized to generate steam and discharged to take away the reaction heat. This part of steam is difficult to reuse and cannot be directly reused as waste heat. It is directly discharged, resulting in a waste of resources and an increase in production costs. Therefore, there are shortcomings. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a heat energy recovery device for a hydrogenation reactor, which can utilize the heat generated during the reaction process of the hydrogenation reactor and bring the heat to the distillation process to be used as a heat source in the distillation process, thereby improving the recovery rate of heat energy, saving resources and reducing production costs.

[0005] This application is implemented as follows:

[0006] A hydrogenation reactor assembly, wherein the hydrogenation reactor assembly includes a reactor body;

[0007] A heat absorption component, the heat absorption component comprises a heat exchange jacket, a heat absorption pipe, an oil storage tank, an inlet pipe, an inlet oil pump, an outlet pipe and an outlet oil pump, the heat exchange jacket is sleeved on the reactor body, the heat exchange jacket is provided with a gap, the heat absorption pipe is wound around the gap, one end of the inlet pipe is fixedly connected to the oil storage tank, the other end of the inlet pipe is fixedly connected to one end of the heat absorption pipe, the inlet oil pump is arranged on the inlet pipe, one end of the outlet pipe is fixedly connected to the other end of the heat absorption pipe, and the outlet oil pump is arranged on the outlet pipe;

[0008] A heat utilization component, the heat utilization component includes a distillation tower body, a heat exchange tube and a circulation tube, the heat exchange tube is arranged inside the distillation tower body, the other end of the outlet tube is fixedly connected to one end of the heat exchange tube, one end of the circulation tube is fixedly connected to the other end of the heat exchange tube, the other end of the circulation tube is connected to the oil storage tank, and a circulation oil pump is arranged on the circulation tube.

[0009] In an embodiment of the present application, the heat exchange jacket includes a heat exchange inner shell and a heat exchange outer shell. An interval space is provided between the heat exchange inner shell and the heat exchange outer shell. The heat exchange inner shell is closely attached to the reactor body, the heat absorption tube is arranged in the interval space, and the heat absorption tube is closely attached to the heat exchange inner shell.

[0010] In an embodiment of the present application, the heat absorption tube is a spiral wound tube.

[0011] In an embodiment of the present application, the oil storage tank includes an oil storage tank body and a protective outer shell, and the protective outer shell is sleeved outside the oil storage tank body.

[0012] In an embodiment of the present application, a liquid level gauge is arranged on the oil storage tank body.

[0013] In an embodiment of the present application, a liquid discharge pipeline is arranged on the oil storage tank body.

[0014] In an embodiment of the present application, a temperature detector is arranged on the lead-out pipe.

[0015] In an embodiment of the present application, the heat exchange tube is an array type heat exchange tube. One end of the array type heat exchange tube is connected to the introduction pipe, and the other end of the array type heat exchange tube is connected to the circulation pipe.

[0016] The beneficial effect of the present application is as follows: Heat conducting oil is stored in the oil storage tank. The heat conducting oil is input into the heat absorption tube by using an introduction oil pump. At this time, the hydrocracking process is carried out in the reactor body. A large amount of heat energy is generated in the reactor body. The heat energy is transferred to the heat conducting oil in the heat absorption tube through the heat exchange jacket. Then, the lead-out oil pump is started to transfer the heat conducting oil carrying heat energy from the heat absorption tube to the lead-out pipe and the heat exchange tube in sequence. At this time, the heat generated by the reaction can be utilized. When the temperature of the heat conducting oil becomes low, the circulation oil pump is started to re-transport the heat conducting oil with reduced temperature back to the oil storage tank, thus completing one cycle. During the production and manufacturing process, the heat conducting oil can be recycled for a long time, so that the heat energy of the reaction can be continuously utilized, thereby solving the problems that the heat generated by the existing hydrocracking process is difficult to reuse secondarily, the waste heat cannot be directly reused and is directly discharged, resulting in waste of resources and increased production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 This application embodiment provides a structural schematic diagram of a heat energy recovery device for a hydrogenation reactor;

[0019] Figure 2 This application embodiment provides a cross-sectional view of a heat energy recovery device for a hydrogenation reactor;

[0020] Figure 3 This application embodiment provides a structural schematic diagram of a heat exchange jacket;

[0021] Figure 4 This application embodiment provides a structural schematic diagram of an array type heat exchange tube;

[0022] In the figure: 100 - hydrogenation reactor assembly; 110 - reactor body; 200 - heat absorption assembly; 210 - heat exchange jacket; 211 - heat exchange inner shell; 212 - heat exchange outer shell; 213 - spacer space; 220 - heat absorption tube; 230 - oil storage tank; 231 - oil storage tank body; 232 - protective shell; 233 - liquid level gauge; 234 - liquid discharge pipeline; 240 - inlet pipe; 250 - inlet oil pump; 260 - outlet pipe; 270 - outlet oil pump; 280 - temperature detector; 300 - heat utilization assembly; 310 - fractionating tower body; 320 - heat exchange tube; 321 - array type heat exchange tube; 330 - circulation pipe; 340 - circulation oil pump; Specific embodiments

[0023] The following will, with reference to the accompanying drawings, elaborate on some embodiments of the present utility model. Without conflict, the following embodiments and the features in the embodiments may be combined with each other.

[0024] As Figures 1 - 4 shown, a heat energy recovery device for a hydrogenation reactor according to an embodiment of the present application includes:

[0025] A hydrogenation reactor assembly 100, the hydrogenation reactor assembly 100 includes a reactor body 110;

[0026] A heat absorption assembly 200, the heat absorption assembly 200 includes a heat exchange jacket 210, a heat absorption tube 220, an oil storage tank 230, an inlet pipe 240, an inlet oil pump 250, an outlet pipe 260, and an outlet oil pump 270. The heat exchange jacket 210 is sleeved on the reactor body 110, the heat exchange jacket 210 is provided with a gap, the heat absorption tube 220 is wound around the gap, one end of the inlet pipe 240 is fixedly communicated with the oil storage tank 230, the other end of the inlet pipe 240 is fixedly communicated with one end of the heat absorption tube 220, the inlet oil pump 250 is arranged on the inlet pipe 240, one end of the outlet pipe 260 is fixedly communicated with the other end of the heat absorption tube 220, and the outlet oil pump 270 is arranged on the outlet pipe 260;

[0027] Heat utilization component 300, the heat utilization component 300 includes a fractionating tower body 310, a heat exchange tube 320 and a circulation pipe 330. The heat exchange tube 320 is arranged inside the fractionating tower body 310. The other end of the outlet pipe 260 is fixedly communicated with one end of the heat exchange tube 320. One end of the circulation pipe 330 is fixedly communicated with the other end of the heat exchange tube 320. The other end of the circulation pipe 330 is communicated with the oil storage tank 230. A circulation oil pump 340 is arranged on the circulation pipe 330. There is heat-conducting oil stored in the oil storage tank 230. The heat-conducting oil is input into the heat absorption tube 220 by using the inlet oil pump 250. At this time, the hydrocracking process is carried out in the reactor body 110. At this time, a large amount of heat energy is generated in the reactor body 110. The heat energy is transferred to the heat-conducting oil in the heat absorption tube 220 through the heat exchange jacket 210. At this time, the outlet oil pump 270 is started to transfer the heat-conducting oil carrying heat energy from the heat absorption tube 220 to the outlet pipe 260 and the heat exchange tube 320 in sequence. At this time, the heat generated by the reaction can be utilized. When the temperature of the heat-conducting oil becomes low, the circulation oil pump 340 is started at this time to transport the heat-conducting oil with reduced temperature back to the oil storage tank 230 again, thus completing one cycle. During the manufacturing process, the heat-conducting oil can be recycled for a long time, so that the heat energy of the reaction can be continuously utilized, thus solving the problems that the secondary utilization of the heat generated by the current hydrocracking process is difficult, the waste heat cannot be directly reused and is directly discharged, resulting in waste of resources and increased production costs.

[0028] As Figure 3 shown, the heat exchange jacket 210 includes a heat exchange inner shell 211 and a heat exchange outer shell 212. There is an interval space 213 between the heat exchange inner shell 211 and the heat exchange outer shell 212. The heat exchange inner shell 211 is closely attached to the reactor body 110. The heat absorption tube 220 is arranged in the interval space 213 and the heat absorption tube 220 is closely attached to the heat exchange inner shell 211. The heat generated in the reactor body 110 is transferred to the heat absorption tube 220 through the heat exchange inner shell 211, so that the heat-conducting oil carries heat and the temperature rises. The heat absorption tube 220 is a spiral wound tube. The spiral wound tube can fully contact the heat exchange inner shell 211, so that the heat transfer efficiency is higher. The oil storage tank 230 includes an oil storage tank body 231 and a protective outer shell 232. The protective outer shell 232 is sleeved outside the oil storage tank body 231. The protective outer shell 232 is used to protect the oil storage tank body 231. A liquid level gauge 233 is arranged on the oil storage tank body 231. The liquid level gauge 233 is used to observe the specific capacity of the oil in the oil storage tank body 231 to prevent overloading. A liquid discharge pipeline 234 is arranged on the oil storage tank body 231. The liquid discharge pipeline 234 is used to supplement or discharge the heat-conducting oil. A temperature detector 280 is arranged on the outlet pipe 260. The temperature detector 280 is used to observe the temperature of the heat-conducting oil flowing into the heat exchange tube 320.

[0029] As Figure 4As shown, the heat exchange tubes 320 are arrayed heat exchange tubes 321. One end of the arrayed heat exchange tubes 321 is connected to the inlet tube 240, and the other end is connected to the circulation tube 330. After the heat transfer oil enters the fractionating tower body 310 through the arrayed heat exchange tubes 321, the heat transfer oil can be fully distributed in the fractionating tower body 310, thereby improving the fractionation efficiency of the fractionating tower body 310.

[0030] In summary, the working principle of a heat energy recovery device for a hydrocracking reactor according to an embodiment of the present invention is as follows: There is heat transfer oil stored in the oil storage tank 230. The heat transfer oil is pumped into the heat absorption tubes 220 by using the inlet oil pump 250. At this time, the hydrocracking process is carried out in the reactor body 110. A large amount of heat energy is generated in the reactor body 110 at this time. The heat energy is transferred to the heat transfer oil in the heat absorption tubes 220 through the heat exchange jacket 210. At this time, the outlet oil pump 270 is started to sequentially transfer the heat transfer oil carrying heat energy from the heat absorption tubes 220 to the outlet tube 260 and the heat exchange tubes 320. At this time, the heat generated by the reaction can be utilized. When the temperature of the heat transfer oil becomes low, the circulation oil pump 340 is started to re-transport the heat transfer oil with a lower temperature back to the oil storage tank 230, thereby completing one cycle. During the production and manufacturing process, the heat transfer oil can be recycled for a long time, so that the heat energy of the reaction can be continuously utilized, thereby solving the problems that the secondary utilization of the heat generated by the current hydrocracking process is difficult, the waste heat cannot be directly reused, and it is directly discharged, resulting in waste of resources and increased production costs.

[0031] The above are only the embodiments of the present application and are not used to limit the protection scope of the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

Claims

1. A heat energy recovery device for a hydrogenation reactor, characterized in that, Comprising: A hydrogenation reactor assembly (100), the hydrogenation reactor assembly (100) including a reactor body (110); A heat absorption assembly (200), the heat absorption assembly (200) including a heat exchange jacket (210), an endothermic tube (220), an oil storage tank (230), an inlet pipe (240), an inlet oil pump (250), an outlet pipe (260), and an outlet oil pump (270). The heat exchange jacket (210) is sleeved on the reactor body (110), the heat exchange jacket (210) is provided with a gap, the endothermic tube (220) is wound around the gap, one end of the inlet pipe (240) is fixedly connected to the oil storage tank (230), the other end of the inlet pipe (240) is fixedly connected to one end of the endothermic tube (220), the inlet oil pump (250) is arranged on the inlet pipe (240), one end of the outlet pipe (260) is fixedly connected to the other end of the endothermic tube (220), and the outlet oil pump (270) is arranged on the outlet pipe (260); A heat utilization assembly (300), the heat utilization assembly (300) including a fractionating tower body (310), heat exchange tubes (320), and a circulation pipe (330). The heat exchange tubes (320) are arranged inside the fractionating tower body (310), the other end of the outlet pipe (260) is fixedly connected to one end of the heat exchange tubes (320), one end of the circulation pipe (330) is fixedly connected to the other end of the heat exchange tubes (320), the other end of the circulation pipe (330) is connected to the oil storage tank (230), and a circulation oil pump (340) is arranged on the circulation pipe (330).

2. The heat energy recovery device of a hydrogenation reactor according to claim 1, characterized in that, The heat exchange jacket (210) includes a heat exchange inner shell (211) and a heat exchange outer shell (212), an interval space (213) is provided between the heat exchange inner shell (211) and the heat exchange outer shell (212), the heat exchange inner shell (211) is closely attached to the reactor body (110), the endothermic tube (220) is arranged in the interval space (213), and the endothermic tube (220) is closely attached to the heat exchange inner shell (211).

3. A heat energy recovery device for a hydrogenation reactor according to claim 1, characterized in that, The endothermic tube (220) is a spiral wound tube.

4. A heat energy recovery device for a hydrogenation reactor according to claim 1, characterized in that, The oil storage tank (230) includes an oil storage tank body (231) and a protective outer shell (232), and the protective outer shell (232) is sleeved outside the oil storage tank body (231).

5. A heat energy recovery device for a hydrogenation reactor according to claim 4, characterized in that, A liquid level gauge (233) is arranged on the oil storage tank body (231).

6. The heat energy recovery device of a hydrogenation reactor according to claim 4, characterized in that, A liquid discharge pipeline (234) is arranged on the oil storage tank body (231).

7. A heat energy recovery device for a hydrogenation reactor according to claim 1, characterized in that A temperature detector (280) is arranged on the outlet pipe (260).

8. A heat energy recovery device for a hydrogenation reactor according to claim 1, characterized in that, The heat exchange tubes (320) are arrayed heat exchange tubes (321), one end of the arrayed heat exchange tubes (321) is connected to the inlet pipe (240), and the other end of the arrayed heat exchange tubes (321) is connected to the circulation pipe (330).

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